#set input_delay [expr $clk_period/4];           
set input_delay 0.5;           
# Input Delay of all input ports except clock
set output_delay [expr $clk_period/4];        
# Output Delay of all output ports

#-----input/output delay------
set allin_except_CLK [remove_from_collection [all_inputs] [get_ports $clock_name]]
set_input_delay [expr $input_delay] -clock $clock_name $allin_except_CLK
set_output_delay [expr $output_delay] -clock $clock_name [all_outputs]
